After qian, the unit is wan, which is not taught in the video. So if you put together the numbers, the rule is: find out the unit first, then put the number before the unit, and read them in order. Like 22,500, firstly you find out the units﻿ in the order of bigger to smaller: wan,qian,bai. So it ‘s read èrwàn èrqiān wŭbăi. So it’s quite simple. It’s a good try. Happy weekends!
____Lucky

Usually the﻿ book always try to make the readers to understand the things in a simple way. But unexpectedly, that mislead the reader. The pronounciation of z,c,s,zh,ch,sh is a big concern for many Chinese learners. Maybe you can learn more in my other videos about these pronunciations —–intensive mandarin Chinese review of zh, ch, sh,r….
________Lucky

This was a real eye-opener for me. Thank you. My mandarin pronunciation guide in the book I’m reading said that when i appears after z, c, s, zh,﻿ ch, and sh it sounds like r in ‘thunder’. That led me to pronounce the number four like the english word sir (or like the ‘cer’ in ‘dancer’). From your example I see now that my book is not correct.

I am making a one year course and that will be out in a month or two. You can follow my course step by step a few times a week depending on your schedule. But listen to my videos and also prepare a book to learn now to build up the basic understanding of Chinese. I have How to Chinese Mandarin Chinese book available in Amazon. Maybe it’s a good choice.
There is﻿ a Chinese proverb: Well begun half done.
_____Lucky